Hoist mechanism



1.1. GODFREL HOIST MECHANISM,

J.. F. GODFREY.

HOIST MECHANISM.

APPLICATION FILED AuG.2a, 1920.

Patented Nov. 15, 1921.

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J. FfGODFREY.

HOIST MECHANISM.

APPLICATION man Amma. 1920.

Patented Nov. 15, 1921.4

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UNITED STATES PATENT OFFICE.

JOHN F. GODFREY, 0F ELKHART, INDIANA.

10 @ZZ whom t may concern.'

Be it known that I, JOHN F. GoDFRnY, a citizen of the United States,residing at Elkhart, in the county of Elkhartand State of Indiana, haveinvented certain new and useful Improvementsin Hoist Mechanism, of whichthe following is a specification;

This invention relates to hoist mechanism whicli is capable of elevatingand conveying loa s.

lOne object of the invention is t0 provide a simple, compact andefficient hoist which is rcapable of hoisting a load and simultaneouslyand independently conveying another load in either of a plurality ofdirections.

Another object is: to provide a relatively inexpensive but durable hoisthaving its parts arranged and controlled in a manner to meet the variousrequirements for successful commercial operation. y Y These and otherobjects are accomplished by means of the hoist mechanism disclosed onthe accompanying sheets of drawings, ,in which Figure 1 is a' frontelevation of hoist mechanism embodying my invention;

Fig. 2 is a top plan view of the same;

Fig. 3 is an end elevation ofthe same hoist mechanism; and, l

Fig. 4fis a detail side elevation showing the brake and releasemechanism associated with clutch mechanism.

The various novel features of the invention will be apparent from thefollowing description and drawings and will be particularly `pointed outin the appended claims.

Referring to the figures of the drawings, it

`will be noted that I` have disclosed hoist equipment mounted upon asuitable base 9, the hoist and conveying mechanism being operated by` anelectric motor 10'mounted upon the base 9. ,The shaft 11 of the electricmotor has secured thereto a. pinion 12 which meshes with and drives arelatively large gear 13 mounted upon one end of a shaft 14,

I -which carries concentrically with the gear 1'3 tively connected to adrum 20 around which a cable may be wound for hoisting purposes. Looselymounted upon the shaft 14 near one end thereof isan outer clutch member21 Specification of Letters Patent.

y Hors'r MEGHAN'ISM.

Patented Nov. 15, 1921.

Application Ied August 23, 1920. Serial VNo. 405,450.

to which a gear 22 is secured, said gear 22 meshing with a relativelylarge gear 23 operatively connected to af conveying drinn 24 aroundwhich a cable may be wound, said conveying drum being positively drivenin opposite or reverse directions by mechanism to be referred tohereinafter. Also loosely mounted upon the shaft 17 is another outerclutch member 25 to which is secured a gear 26 also meshing with thegear 23. It will be noted that in view of the fac-t that the gears 15and 16 are in mesh with each other, shafts 14 and 17 are caused torotate in opposite directions. Accordingly, gears 22 and 26,respectively, drive the gear. 23, and accordingly the reverse travelingdrum 24,*in opposite directions. Also loosely mounted upon the shaft 14vis another outer clutch member 27 to which is secured the gear 18 fordriving the hoisting drum 2O through gear 19. From the arrangement thusfar described, it

ywill be understood that when the motor is in -erating member 28 havingstuds'29 which are engaged by a cone member 30 for eX- panding the innerclutch member .and causing the reversetraveling drum 24 to travel Vinone direction through the operation of the outer clutch member k21 andgears 22 and 23.

.ln a similar manner the outer clutch member 25 may be driven fordriving the reverse traveling drum in an opposite direction throughthe'operation of a cone member 31, and likewise the hoisting drum'may beoperated through the outer clutch member 27 through the operation of acone member 32. The reverse clutches are operative simultaneously sothat when one vclutch is thrown in for -driving the traveling drum 24 inone direction, the other clutch is thrown out,

there also being a central neutral inoperative position. This isaccomplished by actuating the cone members 30 and 31 in opypositedirections by a single control lever 33 which is pivotally connected at34 to a supporting arm 35 secured to a frame member 36. The pivotalpoint 34 of the lever is between the` cone-shapedmembers 30 and 31provided which actuates the cone member 32,

which is slidably mounted upon the shaft 14, said control lever 37 beingpivotally mounted at 38 on the supporting arm 35. From the arrangementthus far described, it is apparent that the hoistinn drum may beoperated whether or not the reverse traveling drum 24 is being operated,and likewise the reverse traveling drum may be operated in eitherdirection whether or not the hoisting drum 2O is being operated. Inother words, the hoisting and reverse traveling or conveying drums arecapable of independent operation and also may be operated at the sametime independently of each other.

The hoisting drum is provided with brake mechanism, including` Va brakeband 39, which passes around and engages the outer clutch member 27, oneend of said brake band 39 being anchored at the point 40 to anupstanding arm 41 secured to therbed plate 9, the other end of the brakeband 39 being connected through a spring or resilient member 42 to amember 43 pivotally connected at 44 to a foot brake pedal 45, one end ofthe latter of which is pivotally connected at a point 46 to a projectingportion 47 of the arm 41. It is apparent, therefore, that when pressureis applied at the outer or free end of the foot pedal 45, the brake band39 will be forced into intimate contact with the outer clutch member 27for retarding or stopping the movement of the hoisting drum. The brakepedal 45 may be locked in any braking position through the operation ofa pawl 48 pivotally connected at 49 to upstanding ears 50 on the pedal45, said pawl having` a plurality of teeth 51, any one of which mayengage under a lip 52 formed on a portion 53 of the arm or casting 41.The pawl may be released by depressing the free end 54 thereof.Similarly the reverse traveling drum 24 may be retarded or stopped by abrake includingva brake band 55 embracing the outer clutch member 25,one end of the brake band being anchored at the point 56 to an arm 57secured to the bed plate 9 and the other end of the brake band 55 beingyieldably connected to a foot pedal 58 through a connection 59. Thebrake may be locked in a braking position by means of a pawl 60, theteeth 61 of which coperate with the lip 62 at the outer end of the arm57, Vsaid pawlr being pivotally mounted at 63 to upstanding` ears 64on'thepedal 58. vThe pawl may be released by applying pressure to thefoot portion 65 thereof.

Preferably the operating shafts 14 and 17 are rotatably mounted andsupported inl Likewise the stationary shaft 67 which sup.

ports the hoisting drum 2O and reverse traveling drum 24 is mounted inthe side frames 36 and 66. In this connection it will be appreciatedthat the drums 2O and 24 are loosely mounted on the supporting shaft 67,and in this arrangement are spaced from each other by a suitable spacingmember 68. These drums 20 and 24 are located inwardly from the sideframes 36 and 26 between their associated gears 19 and 23.

This arrangement of parts and the control thereof provide hoistingmechanism which is simple, compact, durable and efficient and which isadapted to meet all of the requirements for successful use.

It is my intention to cover all modifications of the invention fallingwithin the spirit and 'scope of the following claims.

I claim:

1. In hoist mechanism, two side frames, three shafts supported by saidside frames and extending therebetween, a hoisting drum and a reversemotion drum independently mounted on one of said shafts, gearingmechanism carried by said other two shafts for operating said hoistingand reverse motion drums, and brake mechanism operating w upon saidgearing mechanism associated with each drum.

2. In a hoist mechanism, spaced shaft supporting means, a singledrum-carrying shaft extending therebetween, two drums independentlymounted on said shaft, a gear iixedly associated with each drum andcarried by the end of the drum adjacent the shaft supporting means, andmeans adapted to selectively drive one drum in either direction andsimultaneously to drive the other drum in a single direction.

3. In a hoist mechanism, spaced shaft supporting means, a singledrum-carrying shaft extending therebetween, two drums independentlymounted on said shaft in fixed' axial relation, a gear fixedlyassociated with each drum and carried bythe end of the drum adjacent theshaft supporting means, aV pair of shafts extending parallel to saiddrum shaft and provided with gears adapted to selectively drive-one drumin either di-' rection and simultaneously to drive the other drum in asingle direction, said drives being independently controlled byclutches, and brakes associated with the driving means of each drum.V f1 4. In a hoist mechanism, shaft supporting means, a singledrum-carrying shaft supportedthereby, a-hoisting drum and a conveyingdruml independently mounted on said shaft in fixed axial relation, aygear shaft adjacent said drum-carrying Vshaft carrying gears adapted todrive each of said drums independently of each other, and a second gearshaft carrying a gear adapted to drive said conveying drum in theopposite direction independently of the motion of the hoist drum.

5. In a hoist'mechanism, shaft supporting means, a single drum-carryingshaft supported thereby, a hoisting drum and a conveying drumindependently mounted on said shaft, a gear shaft adjacent saiddrum-carrying shaft carrying gears adapted to drive each of said drumsindependently of each other, and a second gear shaft carrying a gearadapted to drive said conveying drum in the opposite direction, andbrakes operating upon the driving gears of each of said drums. Y

6. In a hoist mechanism, shaft supporting means, a single drum-carryingshaft supported thereby, a hoisting drum and a conveying drumindependently mounted on said shaft, a driven gear shaft adj acent saiddrum- Y carrying shaft, driving gears loosely mounted on said gear shaftin mesh with gears connected to each of said drums, an independentclutch associated with each said driving gear, a second gear carryingshaft driven in the reverse direction from said first gear carryingshaft, a reverse driving gear for said conveying drum loosely mounted onsaid second gear carrying shaft, and a clutch adapted to connect saidlast-named gear toits shaft.

7. In a hoist mechanism, shaft supporting means, a single drum-carryingshaft supported thereby, a hoisting drum and a conveying drumindependently mounted on said shaft, a driven gear shaft adjacent saiddrum-carrying shaft, driving gears loosely mounted on said gear shaft inmesh with gears associated With each of said drums, an independentclutch associated with each said driving gear, a second gear carryingshaft driven in the reverse direction from said first gear carryingshaft, a reverse driving gear for said conveying drum loosely gearsassociated with each of said drums,

an independent clutch associated With each said driving gear, a secondgear carrying shaft driven in the reverse direction from said first gearcarrying shaft, a reverse driving gear for said conveying drum looselymounted on said second gear carrying shaft, a clutch adapted to connectsaidlast-named gear toits shaft, and a single operating lever for bothclutches for the drive gears for the conveying drum.

9. In a hoist mechanism, shaft supporting means, a single drum-carryingshaft supported thereby, a hoisting drum and a conveying` drumindependently mounted on said shaft, a driven gear shaft adjacent saiddrum-carrying shaft, driving gears loosely mounted on said gear shaft inmesh With gearsV associated With each of said drums, an independentclutch associated With each said driving gear, a second gear carryingshaft driven in the reverse direction from said first gear carryingshaft, a reverse driving gear for said conveying drum loosely mounted onsaid second gear carrying shaft, a clutch adapted to connect said lastnamed gear to its shaft, and a single operating lever for both clutchesfor the drive gears for thev conveying drum, said lever being sosupported as to prevent simultaneous operation of both clutches.

Signed at Elkhart, Indiana, this 19th day of August, 1920.

JOHN F. GODFREY.

